Mueller announces his resignation.
"When a subject of an investigation obstructs that investigation or lies to investigators, it strikes at the core of the government's effort to strike at the truth and hold wrong doers accountable."
"Charging the president with a crime was therefore not an option we could consider."
He said he doesn't question William Barr's "good faith" in this effort.
"The report is my testimony," and he would not provide information beyond the report.
"I do not believe it would be appropriate for me to speak further."